Casting velocity control mechanism for centrifugal wire casting machines



E. U. LANG Aug.v 30, 1966 CASTING VELOCITY CONTROL MECHANISM FOR CENTRIFUGAL WIRE CASTING MACHINES Filed June 24, 1965 2 Sheets-Sheet l INVENTOR.

Ernes Aug. 30, 1966 E. u. LANG 3,263,957

CASTING VELOCITY CONTROL MECHANISM FOR CENTRIFUGAL WIRE CASTING MACHINES Filed June :24, 1963 2 Sheets-Sheet :2

Z081 3 INVENTOR.

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United States Patent 3,268,957 CAS'HNG VELUCHY CONTRL MECHANISM FR CENTRHFUGAL WIRE CAS'HNG MACHHNES Ernest U. Lang, Niles, Mich., assigner to National Standard Company, Niles, Mich., a corporation of Delaware Filed .lune 24, 1963, Ser. No. 289,998 9 Claims. (Cl. 22-57.2)

The present invention relates to a continuous wire casting machine of the type in which a molten metal container and an associated chilling die are rotated as a unit to create a centrifugal force for producing a pressure at the chilling die sufficient to force the metal outwardly therethrough. More specifically, the invention relates to means for controlling the casting velocity, that is, the rate at which metal is forced through the casting nozzle or die, independently of the pressure at the nozzle.

It is known to utilize centrifugal force to produce a pressure for forcing molten metal through a die, but in such apparatus the casting velocity or rate of production of the cast metal is dependent upon the magnitude of the centrifugal force created at the die. Accordingly, if a certain pressure at the die is necessary in order to produce a wire product of certain desired characteristics, then the casting velocity is automatically determined by such pressure and is not subject to independent control.

ln the casting of wire by means of centrifugal force it is desirable to coil the wire in a collecting pan disposed immediately below the rotary path of travel of the die. It will be recognized that in order to lay a suit-able coil of wire in such a collecting pan, it is necessary to rotate the pan so as to control the relative rotation of the die with respect to the pan and correlate such relative rotation with the rate at which the wire is being forced from the die.

It is an object of the present invention to provide a centrifugal wire casting machine having feed roll means mounted in association with a rotatable chilling die for controlling the rate at which metal is extruded through the die into wire.

Another object of the invention is to provide a centrifugal wire casting machine wherein a collecting pan is rotated beneath the rotating chilling die at a lesser speed than the latter and wherein means is provided for automatically correlating the rate at which metal is passed through the die with the relative rate of rotation of the die with respect to the collecting pan.

Still another of my objects is to provide a wire casting machine of the type last above-mentioned comprising feed roll means for controlling the rate at which metal is passed through the die, and means responsive to the relative rate of rotation of the die with respect to the collecting pan for driving the feed rolls about their own axes.

These and other objects and advantages of the invention will be apparent from the following description thereof.

Now in order to acquaint those skilled in the art with the manner of utilizing and practicing my invention, I shall describe, in conjunction with the accompanying drawings, certain preferred embodiments of my invention.

In the drawings:

FIGURE l is a vertical sectional view showing a centrifugal wire casting machine having velocity control feed rolls mounted thereon in accordance with the present invention;

FIGURE 2 is a transverse section taken substantially along the line 2-2 of FIGURE l and FIGURE 3 is a fragmentary section taken substantially along the line 3-3 of FIGURE 1 showing a casting nozzle or die and a pair of associated feed rolls for control- ICC ling the velocity at which wire is delivered from the nozzle.

Referring now to the drawings, there is shown a rotatable casting assembly 1S comprising a generally tubular funnel 20 having an outwardly flared upper end 21 into which molten metal is poured during a casting operation, and a conduit 22 which is integral with or otherwise lsuitably secured to the lower end of the funnel 20 to conduct molten metal from the funnel to a chilling die or nozzle 24 mounted at the outer end of the conduit. The conduit 22 is tubular and diminishes in diameter as it progresses outwardly toward the casting nozzle. It will also be noted (as best shown in FIGURE 2) that the conduit 22 is arcuate in its configuration, and in fact is approximately semi-circular when viewed in plan, so that the metal wire W passes out of the nozzle 24 in a substantially tangential direction.

The funnel 2@ is mounted in vertically spaced ball bearings 26 and 28 for rotation about its vertical axis, and thus the entire casting assembly 18 including Ithe funnel, the conduit 22 and the nozzle or die 24 is adapted to be rotated about the axis of the funnel to 'create a centrifugal force which will produce a pressure at the nozzle 24 sufficient to force the metal outwardly therethrough.

A collecting pan 30 comprises a bottom wall 32 and an annular side wall or peripheral rim 34 which extends upwardly so as to substantially encompass the conduit 22 and nozzle 24 as the latter move through their circular path of travel. The pan 30 is adapted to collect the wire W which passes from the nozzle 24, and as shown in FIGURE 1 the wire is simply laid in the pan in substantially coiled form as the nozzle moves through a circularrpath within the contines of the pan side wall 34. An axial hub 36 is formed integral with the bottom of the pan 3l) so as to project downwardly therefrom, and the hub is supported in a pair of vertically spaced ball bearings 38 and 4t) whereby the pan 30 is adapted to rotate about the axis of rotation of the casting assembly 18.

A drive motor 42 serves as a source of power for rotating both the casting assembly 18 and the collecting pan 30, although as described hereinafter these members are normally rotated at different speeds. A pulley 44 having a pair of vertically spaced belt grooves 45 and 46 is fixedly mounted on th'e hub 36 of the collecting pan, and an endless belt 48 is mounted over a motor drive pulley 50 and around the lower groove 46 of the pulley 44 so as to rotate the collecting pan 30 at a predetermined speed. The rotation of the pulley 44 is transmitted to a casting assembly drive shaft 52 by means of an endless belt 54 which is mounted around the upper groove 45 in the pulley 44 and around a pulley 56 which is carried on the lower end of the shaft 52.

The lower end of the vertical drive shaft 52 is supported in suitable ball bearings such as shown at 58, and the upper end of the shaft drives a variable speed device 60 of any suitable type adapted to drive an output shaft 62 at a variable predetermined speed. The output shaft 62 carries a pulley 64, and an endless belt 66 transmits power from the pulley 64 to a pulley 68 which is iixedly mounted on the funnel 20 proximate the flared upper end thereof.

It will now be understood that by controlling the speed of the motor 42 it is possible to control the speed of rotation of the collecting pan 30, and by means of the variable speed device 60 it is possible to control the speed of rotation of the casting assembly 18 independently of the rotation of the pan. In order that the wire W passed from the nozzle 24 may be laid in the collecting pan 3l) in suitable coil form, the nozzle must of course be rotated at a speed in excess of the speed of the pan. It will also be recognized that it is desirable to control the: relative speed of the nozzle with respect to the collecting pan in accordance with the rate at which the Wire W passes from the nozzle in order that the wire will be suitably coiled in the pan. p.

An important feature of the present invention resides in the provision of a pair of feed rolls 70 and 72 which control the rate at which the wire W passes from the nozzle 24, and which are driven about their own axes at a speed proportional to the relative speed of the casting nozzle with respect to the collecting pan. FIGURES l and 2 show a mounting flange 73 which is integral with or otherwise secured to the outer end 74 of the conduit 22. The two feed rolls 70 and 72 are supported on vertically valigned shafts 75 and 76 which are rotatably carried by the supporting flange 73.

The upper feed roll 70 comprises a gear portion 77 and a grooved portion 78 integral with or otherwise secured to the side of the gear, and in a similar manner the lower feed roll 72 comprises a gear portion 79 and a grooved portion 80 integral with the side thereof. The rolls 70 and 72 are mounted one above the other with the gear portions 77 and 79 meshed with one another. The upper and lower grooved portions 78 and 80 are also disposed one immediately above the other to define a small opening therebetween which is in substantial alignment with the casting nozzle 24 and through which the wire W passes after it is forced through the nozzle 24 by centrifugal force. FIGURE 3 shows the manner in which the feed rolls 70 and 72 are mounted closely adjacent the nozzle 24 so that the wire passes between the feed rolls substantially immediately after it leaves the nozzle.

It is important to note that while the rate of rotation of the casting assembly 18 determines the magnitude of the pressure produced at the nozzle 24, yet it is the feed rolls 70 and 72 which serve to control the rate at which the wire W is passed from the nozzle. In other words, the rate of rotation of the feed rolls 70 and 72 about their shafts 75 and 76 respectively will control the casting velocity. Accordingly, it is a feature of the present invention that the feed rolls 70 and 72 are driven about their axes on the shafts 75 and 76 at a rate of rotation which is automatically correlated with the relative rotation of the casting nozzle 24 with respect to the collecting pan 30. In this manner, the casting velocity will always be properly correlated with the relative movement of the nozzle with respect to the pan, and the wire will thus be suitably coiled in the pan.

The mechanism for driving the feed rolls 70 and 72 will now be described, and it will be seen that a ring gear 82 comprising a plurality of gear teeth 83 is formed on the upper edge of the rim 34 of the collecting pan. The shaft 75 on which the upper feed roll 70 is mounted has an extension 75 on which is mounted a feed roll drive gear 84. The gear 84 meshes with the ring gear 82, and since the gear 84 is carried on the flange 73 for rotation with the nozzle 24 it will be seen that the gear 84 will be driven about the axis of the shaft 75 at a speed which is proportional to the relative speed of the nozzle 24 with respect to the collecting pan 30. In this manner, the rate at which the wire W passes from the nozzle 24 is controlled by the feed rolls in accordance with the relative rotation of the nozzle with respect to the pan. It should be understood that other methods of driving the feed rolls may be utilized, such as the use of D.C. motors.

In order to remove the wire which is coiled in the collecting pan 30, an axial opening 86 is formed in the hub member 36 for communication with the interior of the pan. The leading end of the coiled wire W is directed dow-nwardly through the opening 86 and thus out of the collecting pan where it may be wound on suitable spools or reels (not shown). lt will be understood that the machine described herein may be operated continuously since the wire which is formed and coiled in the pan may be continuously withdrawn through the opening 86 and wound on reels, thus eliminating any need for shutting down the machine to remove the wire.

A cooling system is provided yin association with the apparatus described hereinabove, and such system includes a collar 88 which is mounted on the funnel 20 for rotation therewith, and a stationary collar 90 which surrounds the movable collar 88. The collar 90 is connected to a water inlet line 92 and a water outlet line 94, the inlet line being arranged to supply water to an internal annular groove 96 formed in the collar 90, and the outlet line 94 being adapted to receive water from an internal annular groove 98 formed in the collar 90. The rotatable collar 88 has an inlet duct 100 which communicates with the annular groove 96, and a water supply line 102 has one end connected to the duct and its other end connected to the outer end of the molten metal conduit 22 at 103 for supplying water to cool the nozzle 24. The collar 88 also has an outlet duct 104 which communiactes with the annular groove 98, and a water outlet line 106 has one end connected to the duct 104 and its other end connected to the outer end of the conduit 22 at 107 for conducting water from the nozzle 24 to the return line 94. It will be understood that the collars 88 and 90 form a rotary coupling which permits a cooling medium such as water to be conducted to and from the nozzle 24 while the latter is rotating.

FIGURE 3 shows the manner in which the cooling water is passed around the nozzle 24. An internal annular channel 108 is formed in the end of the conduit 22 so as to surround the nozzle 24. The channel 108 is connected with the i-nlet line 102 by a passage 110, and the channel is connected with the outlet line 106 by a passage 112. It will thus be seen that cooling water which is supplied to the stationary collar 90 by the inlet line 92 will be conducted through the groove 96, passage 100, line 102 and passage 110 to the annular channel 108, and in a similar manner water will be conducted from the channel 108 through the passage 112, line 106, passage 104 and groove 98 to the outlet line 94. Such flow of cooling water through the system will maintain the nozzle 24 at a predetermined reduced temperature suitable for thel continuous casting operation.

If desired, means may be pro-vided for cooling the wire W as it is coiled in the collecting pan 30. Thus, means (not shown) may be provided for spraying cooling water directly onto the coiled wire in the pan 30. In addition, an annular wall (not shown) may be provided which extends upwardly from the bottom wall 32 of the collecting Ipan 30, which wall is disposed approximately one-half to three-quarters of the distance out from the center of the pan, and water may be supplied to the dish thus formed for cooling the wire.

The operation of the continuous wire casting machine described hereinabove will now be briefly reviewed. The motor 42 is operated in order to rotate the collecting pan 30 at a predetermined speed, and by means of the variable speed mechanism 60 the speed of rotation of the casting assembly 18 is adjusted so that the nozzle 24 will rotate at a greater rate of speed than the collecting pan and at a predetermined relative speed with respect to the pan. In determining the desired respective speeds of the casting assembly 18 and the collecting pan it must of course be lborne in mind that the speed of the casting assembly determines the magnitude of the centrifugal force created and thus the magnitude of the pressure produced at the nozzle.

With the nozzle 24 and collecting pan 30 rotating at the desired speeds, molten metal is continuously poured downwardly into the flared upper end 21 of the funnel 20, whereby due to centrifugal force the metal will be forced radially outwardly so as to pass through the chilled `casting nozzle or die and thereby extruded into wire of the desired shape and dimensions. As the wire W passes outwardly from the nozzle 24 it immediately passes between the grooved portions 78 and 80 of the feed rolls 70 and 72, and the rate at which the wire is passed from the nozzle is determined by the rate at which the rolls 70 and 72 are yrotated about the axes of their shafts 75 and 76. The feed rolls 70 and 72 are driven by the ring gear 82 and associated drive gear S4 so that the feed rolls are driven about their axes at a speed which is proportional to the relative rotation of the nozzle with respect to the collecting pan 3l). In this manner, the wire W is laid in suitable coil form in the collecting -pan and is continuously withdrawn through the axial opening 86 in the hub 36 and wound on reels or the like.

A magnetic coil 114 may be wrapped around the outer i end of the conduit 22 so as to surround the casting nozzle 24. The coil is connected by leads 116 and 118 to a source of power so as to produce a magnetic flux at the nozzle for the purpose of improving the grain structure of the cast material. FIGURE l shows an annular flange or collar 120 which is fixedly mounted on the funnel for rotation therewith. A pair of inner and outer concentric rings 122 and 124 made of electrically conductive material are secured in grooves formed in the top surface of the collar 120. The lead 116 is connected to the inner ring 122 and the lead 113 is connected to the outer ring 124. A pair of contacts 125 and 126 are connected to a source of power and are biased into engagement with the rotating rings 122 and 124 respectively so as to permit energization of the magnetic coil 114 while the casting assembly 18 is rotating.

It should be noted that the conduit member 22 of the casting assembly 18 need not be arcuate as shown in FIGURE 2, but may simply comprise a radial conduit adapted to pass the metal out through the die or nozzle 24 in a radial direction. Thus, FIGURE 2 represents an embodiment wherein the conduit 22 follows a non-linear path for the purpose of orienting the nozzle 24 so that the wire passes therefrom in a direction approximately tangential to the rotary path of movement of the nozzle. The foregoing arrangement has the advantage that the wire W may be laid in a coil in the collecting pan 3l) without need for any substantial bending of the wire. Alternatively, the conduit 22 may simply extend radially outwardly so that the wire passes from the nozzle 24 in a radial direction, in which case the feed rolls 70 and 72 would be disposed in a radial plane so as to have the same position relative to the nozzle as in the embodiment of FIGURE 2, and the feed roll drive would include a pair of bevel gears in order that they could still be driven from the ring gear 82. When the conduit 22 extends radially as in the above-mentioned alternative embodiment, it is possible to produce a more uniform pressure across the area of the nozzle opening, but it will be understood that with such an arrangement the wire must bend approximately 90 degrees after it leaves the feed rolls in order that it can be laid in a coil within the collecting pan 30 in the manner herein described.

It should be understood that as described herein and in the appended claims the collecting pan 30 is rotated in the same direction as the casting assembly but at a lesser speed. However, the desired relative rotation of the casting assembly with respect to the collecting pan may in some instances be produced by rotating the collecting pan in the opposite direction. Accordingly, when the collecting pan is described as being rotated at a lesser speed than the casting assembly, such language is intended to include the situation where the collecting pan is being rotated at any speed in a direction opposite to the casting assembly. Thus, while I have illustrated my invention in a preferred form, I do not intend to be limited to that form, except insofar as the appended claims are so limited, since modifications coming within the scope of my invention will be readily suggested to others with my disclosure before them.

I claim:

1. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member being rotated at a speed less than the speed of rotation of said casting assembly, control means carried on said casting assembly and disposed adjacent the outlet of said nozzle for engaging the wire which is delivered therefrom and thereby controlling the casting velocity, and means responsive to the relative rotation of the casting nozzle with respect to said collecting member for actuating said control means.

2. In a centrifugal wire Casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member being rotated at a speed less than the .speed of rotation of said casting assembly, feed roll means carried on said casting assembly and disposed adjacent the. outlet of said nozzle for engaging the wire which is delivered therefrom and thereby controlling the casting velocity, and feed roll drive means proportional to the relative rotation of said casting nozzle with respect to said collecting member to provide coils of wire of predetermined diameter.

3. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member being rotated at a speed less than the speed of rotation of said casting assembly, feed roll means carried on said casting assembly and disposed adjacent the outlet of said nozzle for engaging the wire which is delivered therefrom and thereby controlling the casting velocity, and means responsive to the relative rotation of the casting nozzle with respect to said collecting member for driving said feed roll means.

4. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same -under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member being rotated at a speed less than the speed of rotation of said casting assembly, a pair of feed rolls disposed immediately adjacent one another to define a small opening therebetween which is in alignment with the outlet of said casting nozzle, said feed rolls being carried on said casting assembly and disposed in close proximity to the outlet of said nozzle so that substantially immediately after leaving said nozzle said wire will pass between said feed rolls whereby the latter will control the casting velocity, and means responsive to the relative rotation of the casting nozzle with respect to said collecting member for driving said feed rolls.

5. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member being rotated at a speed less than the speed of rotation of said casting assembly, feed roll means carried on said casting assembly and disposed adjacent the outlet of said nozzle for engaging the wire which is delivered therefrom and thereby controlling the casting velocity, and drive means responsive to the relative rotation of the casting nozzle with respect to said collecting member for driving said feed roll means, said drive means including rst gear means Icarried on said casting assembly for driving said feed roll means, and second gear means carried on said collecting member and in operative engagement with said first gear means for driving the latter.

6. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the inuence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member including a raised annular rim and said member being rotated at a speed less than the speed of rotation of said casting assembly, feed roll means carried on said casting assembly and disposed adjacent the outlet of said nozzle for engaging the wire which is delivered therefrom and thereby controlling the casting velocity, and drive means responsive to the relative rotation of the casting nozzle with respect to said collecting member for driving said feed roll means, said drive means including rst gear means carried on said casting assembly for driving said feed roll means, and second gear means comprising a ring gear formed at the upper edge of said annular rim on said collecting member and in operative engagement with said first gear means for driving the latter.

7. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting member disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting member including a raised annular rim and said member being rotated at a speed less than the speed of rotation of said casting assembly, a pair of feed rolls disposed immediately adjacent one another to dene a small opening therebetween which is in alignment with the outlet of said casting nozzle, said feed rolls being carried on said casting assembly and disposed in close proximity to the outlet of said nozzle so that substantially immediately after leaving said nozzle said wire will pass between said feed rolls whereby the latter will `control the casting velocity, and drive means responsive to the relative rotation of the casting nozzle with respect to said collecting member for driving said feed rolls, said drive means including first gear means carried on said casting assembly for driving said feed rolls, and second gear means comprising a ring gear formed at the upper edge of said annular rim on said collecting member and in operative engagement with said first gear means for driving the latter.

8. In a centrifugal wire casting machine, the improvement comprising, in combination, a rotatable casting assembly including means for receiving molten metal and conducting the same under the influence of centrifugal force to a casting nozzle associated therewith whereby metal is forced outwardly through said nozzle to form a continuous length of wire, a collecting pan disposed beneath said casting assembly for collecting wire which is delivered from said casting nozzle, said collecting pan having a downwardly projecting axial hub integral therewith which hub is rotatably mounted to permit rotation of said collecting pan at a speed less than the speed of rotation of said casting assembly, feed roll means carried on said casting assembly and disposed adjacent the outlet of said nozzle for engaging the wire which is delivered therefrom and thereby controlling the casting velocity, means responsive to the relative rotation of the casting nozzle with respect to said collecting pan for driving said feed roll means, and an axial opening in said hub in communication with the interior of said collecting pan to permit continuous withdrawal of wire therefrom.

9. The invention of claim 7 wherein said collecting member includes a downwardly projecting axial hub which is integral therewith and which is rotatably mounted to permit rotation of said collecting member, and an axial opening in said hub in communication with the interior of said collecting member to permit continuous withdrawal of wire therefrom.

References Cited by the Examiner UNITED STATES PATENTS 1,592,140 7/1926 Horton et al. 22-57.2 2,904,859 9/1959 Wade et al. 22-65 X 3,118,195 l/1964 Gouzou et al ,Z2- 57.2

J. SPENCER OVERHOLSER, Primary Examiner.

R. S. ANNEAR, Assistant Examiner. 

1. IN A CENTRIFUGAL WIRE CASTING MACHINE, THE IMPROVEMENT COMPRISING, IN COMBINATION, A ROTATABLE CASTING ASSEMBLY INCLUDING MEANS FOR RECEIVING MOLTEN METAL AND CONDUCTING THE SAME UNDER THE INFLUENCE OF CENTRIFUGAL FORCE TO A CASTING NOZZLE ASSOCIATED THEREWITH WHEREBY METAL IS FORCED OUTWARDLY THROUGH SAID NOZZLE TO FORM A CONTINUOUS LENGTH OF WIRE, A COLLECTING MEMBER DISPOSED BENEATH SAID CASTING ASSEMBLY FOR COLLECTING WIRE WHICH IS DELIVERED FROM SAID CASTING NOZZLE, SAID COLLECTING MEMBER BEING ROTATED AT A SPEED LESS THAN THE SPEED OF ROTATION OF SAID CASTING ASSEMBLY, CONTROL MEANS CARRIED ON SAID CASTING ASSEMBLY AND DISPOSED ADJACENT THE OUTLET OF SAID NOZZLE FOR ENGAGING THE WIRE WHICH IS DELIVERED THEREFROM AND THEREBY CONTROLLING THE CASTING VELOCITY, AND MEANS RESPONSIVE TO THE RELATIVE ROTATION OF THE CASTING NOZZLE WITH RESPECT TO SAID COLLECTING MEMBER FOR ACTUATING SAID CONTROL MEANS. 